These Rubber Grommets are used to protect or cover through holes. There are 160 sizes available that will accommodate mounting holes ranging from 0.250 in - 2.50 in (6.4 mm - 63.5 mm) diameter and panel thickness ranging from 0.063 in - 0.375 in (1.6 mm - 9.5 mm).
        
                    Unit of Measure
                    
               
        
            Specifications
                                                                                Brands | 
                                                                        N/A HEYCO® | 
                                                                                Head Diameter | 
                                                                        N/A 1.000 in25.40 mm | 
                                                                                Inside Diameter | 
                                                                        N/A 0.500 in12.70 mm | 
                                                                                Mounting Hole Diameter | 
                                                                        N/A 0.750 in19.10 mm | 
                                                                                Overall Height | 
                                                                        N/A 0.625 in15.90 mm | 
                                                                                Maximum Panel Thickness | 
                                                                        N/A 0.375 in9.50 mm | 
                                                                                Maximum Temperature Rating | 
                                                                        N/A 221 ºF105 ºC | 
                                                                                Minimum Temperature | 
                                                                        N/A -40 ºF-40 ºC | 
                                                                                Color | 
                                                                        N/A Black | 
                                                                                Material | 
                                                                        N/A Styrene-Butadiene Rubber (SBR) |